netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:22548] Modules linked in: irq event stamp: 3369755 hardirqs last enabled at (3369754): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3369755): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (0): [] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856 softirqs last disabled at (3431): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3431): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 22548 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:143 [inline] RIP: 0010:unwind_next_frame+0x20a/0x1400 arch/x86/kernel/unwind_orc.c:422 Code: 48 3c 01 49 83 df 00 4d 85 ff 0f 84 74 03 00 00 49 81 ff 00 00 00 81 0f 82 4d 01 00 00 49 81 ff 00 70 40 88 0f 83 40 01 00 00 <44> 8b 1d df de 3c 0b 4c 89 fe 48 81 ee 00 00 00 81 48 c1 ee 08 41 RSP: 0018:ffff8880ba0076f0 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11017400ee7 RCX: 1ffff11017400f24 RDX: dffffc0000000000 RSI: ffff8880ba007680 RDI: 0000000000000001 RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba007937 R11: 0000000000074071 R12: ffff8880ba007920 R13: ffff8880ba00790d R14: ffff8880ba0078d8 R15: ffffffff8122efe1 FS: 00007f582f67a700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000032f49000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __unwind_start+0x5b8/0x960 arch/x86/kernel/unwind_orc.c:667 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x72/0x190 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184 Code: 48 c7 c0 88 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 7c 31 d8 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 fb eb e6 f8 eb c0 0f 0b 0f 0b 48 c7 c7 88 RSP: 0018:ffff888016f5fa10 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 Process accounting paused RAX: 1ffffffff13e3051 RBX: 0000000000000286 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8880321acd88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880ba02b0c0 R14: ffff8880321ac5c0 R15: ffff8880321acd88 try_to_wake_up+0x733/0x1050 kernel/sched/core.c:2056 wake_up_process kernel/sched/core.c:2124 [inline] wake_up_q+0x82/0xe0 kernel/sched/core.c:442 futex_wake+0x3e3/0x480 kernel/futex.c:1706 do_futex+0x2ca/0x1880 kernel/futex.c:3894 __do_sys_futex kernel/futex.c:3950 [inline] __se_sys_futex+0x28f/0x3b0 kernel/futex.c:3918 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f58311080d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f582f67a218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f5831227f88 RCX: 00007f58311080d9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f5831227f8c RBP: 00007f5831227f80 R08: 0000028f027e72ab R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 00007f5831227f8c R13: 00007ffdcf42a48f R14: 00007f582f67a300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4700 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:97 Code: ff 48 89 df e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 RSP: 0018:ffff88809bf1f748 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81a90b32 RDX: 0000000000000000 RSI: ffff88809bf100c0 RDI: 0000000000000001 RBP: ffff88809bf1fbc0 R08: 00000000594ea6fa R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000170198 R13: 1ffff110137e3f02 R14: 000000002a4338ae R15: ffff88809bf1f900 FS: 00007fe814a568c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fb26000 CR3: 000000009c66b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock include/linux/rcupdate.h:628 [inline] __d_lookup+0x5b7/0x710 fs/dcache.c:2287 lookup_fast+0x3a4/0x1080 fs/namei.c:1618 walk_component+0xde/0xda0 fs/namei.c:1807 link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142 link_path_walk fs/namei.c:2270 [inline] path_lookupat+0xe4/0x8d0 fs/namei.c:2318 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0x113/0x210 fs/stat.c:185 vfs_lstat include/linux/fs.h:3137 [inline] __do_sys_newlstat fs/stat.c:350 [inline] __se_sys_newlstat+0x96/0x120 fs/stat.c:344 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe8138c8335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007fff41b37d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00005631b8837240 RCX: 00007fe8138c8335 RDX: 00007fff41b37da0 RSI: 00007fff41b37da0 RDI: 00005631b8836240 RBP: 00007fff41b37e60 R08: 00007fe813b871e8 R09: 0000000000001010 R10: 00007fe813b86b58 R11: 0000000000000246 R12: 00005631b8836240 R13: 00005631b8836266 R14: 00005631b8813081 R15: 00005631b8813086